MediaPlayerService.h revision e104596061b219e9bce6d4db49a9d15242f8d2e5
1/* 2** 3** Copyright 2008, The Android Open Source Project 4** 5** Licensed under the Apache License, Version 2.0 (the "License"); 6** you may not use this file except in compliance with the License. 7** You may obtain a copy of the License at 8** 9** http://www.apache.org/licenses/LICENSE-2.0 10** 11** Unless required by applicable law or agreed to in writing, software 12** distributed under the License is distributed on an "AS IS" BASIS, 13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14** See the License for the specific language governing permissions and 15** limitations under the License. 16*/ 17 18#ifndef ANDROID_MEDIAPLAYERSERVICE_H 19#define ANDROID_MEDIAPLAYERSERVICE_H 20 21#include <arpa/inet.h> 22 23#include <utils/Log.h> 24#include <utils/threads.h> 25#include <utils/List.h> 26#include <utils/Errors.h> 27#include <utils/KeyedVector.h> 28#include <utils/String8.h> 29#include <utils/Vector.h> 30 31#include <media/IMediaPlayerService.h> 32#include <media/MediaPlayerInterface.h> 33#include <media/Metadata.h> 34#include <media/stagefright/foundation/ABase.h> 35 36#include <system/audio.h> 37 38namespace android { 39 40class AudioTrack; 41class IMediaRecorder; 42class IMediaMetadataRetriever; 43class IOMX; 44class IRemoteDisplay; 45class IRemoteDisplayClient; 46class MediaRecorderClient; 47struct RemoteDisplay; 48 49#define CALLBACK_ANTAGONIZER 0 50#if CALLBACK_ANTAGONIZER 51class Antagonizer { 52public: 53 Antagonizer(notify_callback_f cb, void* client); 54 void start() { mActive = true; } 55 void stop() { mActive = false; } 56 void kill(); 57private: 58 static const int interval; 59 Antagonizer(); 60 static int callbackThread(void* cookie); 61 Mutex mLock; 62 Condition mCondition; 63 bool mExit; 64 bool mActive; 65 void* mClient; 66 notify_callback_f mCb; 67}; 68#endif 69 70class MediaPlayerService : public BnMediaPlayerService 71{ 72 class Client; 73 74 class AudioOutput : public MediaPlayerBase::AudioSink 75 { 76 class CallbackData; 77 78 public: 79 AudioOutput(int sessionId); 80 virtual ~AudioOutput(); 81 82 virtual bool ready() const { return mTrack != NULL; } 83 virtual bool realtime() const { return true; } 84 virtual ssize_t bufferSize() const; 85 virtual ssize_t frameCount() const; 86 virtual ssize_t channelCount() const; 87 virtual ssize_t frameSize() const; 88 virtual uint32_t latency() const; 89 virtual float msecsPerFrame() const; 90 virtual status_t getPosition(uint32_t *position) const; 91 virtual status_t getFramesWritten(uint32_t *frameswritten) const; 92 virtual int getSessionId() const; 93 94 virtual status_t open( 95 uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask, 96 audio_format_t format, int bufferCount, 97 AudioCallback cb, void *cookie, 98 audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE); 99 100 virtual void start(); 101 virtual ssize_t write(const void* buffer, size_t size); 102 virtual void stop(); 103 virtual void flush(); 104 virtual void pause(); 105 virtual void close(); 106 void setAudioStreamType(audio_stream_type_t streamType) { mStreamType = streamType; } 107 void setVolume(float left, float right); 108 virtual status_t setPlaybackRatePermille(int32_t ratePermille); 109 status_t setAuxEffectSendLevel(float level); 110 status_t attachAuxEffect(int effectId); 111 virtual status_t dump(int fd, const Vector<String16>& args) const; 112 113 static bool isOnEmulator(); 114 static int getMinBufferCount(); 115 void setNextOutput(const sp<AudioOutput>& nextOutput); 116 void switchToNextOutput(); 117 virtual bool needsTrailingPadding() { return mNextOutput == NULL; } 118 119 private: 120 static void setMinBufferCount(); 121 static void CallbackWrapper( 122 int event, void *me, void *info); 123 124 AudioTrack* mTrack; 125 AudioTrack* mRecycledTrack; 126 sp<AudioOutput> mNextOutput; 127 AudioCallback mCallback; 128 void * mCallbackCookie; 129 CallbackData * mCallbackData; 130 uint64_t mBytesWritten; 131 audio_stream_type_t mStreamType; 132 float mLeftVolume; 133 float mRightVolume; 134 int32_t mPlaybackRatePermille; 135 uint32_t mSampleRateHz; // sample rate of the content, as set in open() 136 float mMsecsPerFrame; 137 int mSessionId; 138 float mSendLevel; 139 int mAuxEffectId; 140 static bool mIsOnEmulator; 141 static int mMinBufferCount; // 12 for emulator; otherwise 4 142 audio_output_flags_t mFlags; 143 144 // CallbackData is what is passed to the AudioTrack as the "user" data. 145 // We need to be able to target this to a different Output on the fly, 146 // so we can't use the Output itself for this. 147 class CallbackData { 148 public: 149 CallbackData(AudioOutput *cookie) { 150 mData = cookie; 151 mSwitching = false; 152 } 153 AudioOutput * getOutput() { return mData;} 154 void setOutput(AudioOutput* newcookie) { mData = newcookie; } 155 // lock/unlock are used by the callback before accessing the payload of this object 156 void lock() { mLock.lock(); } 157 void unlock() { mLock.unlock(); } 158 // beginTrackSwitch/endTrackSwitch are used when this object is being handed over 159 // to the next sink. 160 void beginTrackSwitch() { mLock.lock(); mSwitching = true; } 161 void endTrackSwitch() { 162 if (mSwitching) { 163 mLock.unlock(); 164 } 165 mSwitching = false; 166 } 167 private: 168 AudioOutput * mData; 169 mutable Mutex mLock; 170 bool mSwitching; 171 DISALLOW_EVIL_CONSTRUCTORS(CallbackData); 172 }; 173 174 }; // AudioOutput 175 176 177 class AudioCache : public MediaPlayerBase::AudioSink 178 { 179 public: 180 AudioCache(const char* name); 181 virtual ~AudioCache() {} 182 183 virtual bool ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); } 184 virtual bool realtime() const { return false; } 185 virtual ssize_t bufferSize() const { return frameSize() * mFrameCount; } 186 virtual ssize_t frameCount() const { return mFrameCount; } 187 virtual ssize_t channelCount() const { return (ssize_t)mChannelCount; } 188 virtual ssize_t frameSize() const { return ssize_t(mChannelCount * ((mFormat == AUDIO_FORMAT_PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); } 189 virtual uint32_t latency() const; 190 virtual float msecsPerFrame() const; 191 virtual status_t getPosition(uint32_t *position) const; 192 virtual status_t getFramesWritten(uint32_t *frameswritten) const; 193 virtual int getSessionId() const; 194 195 virtual status_t open( 196 uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask, 197 audio_format_t format, int bufferCount = 1, 198 AudioCallback cb = NULL, void *cookie = NULL, 199 audio_output_flags_t flags = AUDIO_OUTPUT_FLAG_NONE); 200 201 virtual void start(); 202 virtual ssize_t write(const void* buffer, size_t size); 203 virtual void stop(); 204 virtual void flush() {} 205 virtual void pause() {} 206 virtual void close() {} 207 void setAudioStreamType(audio_stream_type_t streamType) {} 208 void setVolume(float left, float right) {} 209 virtual status_t setPlaybackRatePermille(int32_t ratePermille) { return INVALID_OPERATION; } 210 uint32_t sampleRate() const { return mSampleRate; } 211 audio_format_t format() const { return mFormat; } 212 size_t size() const { return mSize; } 213 status_t wait(); 214 215 sp<IMemoryHeap> getHeap() const { return mHeap; } 216 217 static void notify(void* cookie, int msg, 218 int ext1, int ext2, const Parcel *obj); 219 virtual status_t dump(int fd, const Vector<String16>& args) const; 220 221 private: 222 AudioCache(); 223 224 Mutex mLock; 225 Condition mSignal; 226 sp<MemoryHeapBase> mHeap; 227 float mMsecsPerFrame; 228 uint16_t mChannelCount; 229 audio_format_t mFormat; 230 ssize_t mFrameCount; 231 uint32_t mSampleRate; 232 uint32_t mSize; 233 int mError; 234 bool mCommandComplete; 235 236 sp<Thread> mCallbackThread; 237 }; // AudioCache 238 239public: 240 static void instantiate(); 241 242 // IMediaPlayerService interface 243 virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid); 244 void removeMediaRecorderClient(wp<MediaRecorderClient> client); 245 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid); 246 247 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int audioSessionId); 248 249 virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat); 250 virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat); 251 virtual sp<IOMX> getOMX(); 252 virtual sp<ICrypto> makeCrypto(); 253 254 virtual sp<IRemoteDisplay> listenForRemoteDisplay(const sp<IRemoteDisplayClient>& client, 255 const String8& iface); 256 virtual status_t enableRemoteDisplay(const char *iface); 257 258 virtual status_t dump(int fd, const Vector<String16>& args); 259 260 void removeClient(wp<Client> client); 261 262 // For battery usage tracking purpose 263 struct BatteryUsageInfo { 264 // how many streams are being played by one UID 265 int refCount; 266 // a temp variable to store the duration(ms) of audio codecs 267 // when we start a audio codec, we minus the system time from audioLastTime 268 // when we pause it, we add the system time back to the audioLastTime 269 // so after the pause, audioLastTime = pause time - start time 270 // if multiple audio streams are played (or recorded), then audioLastTime 271 // = the total playing time of all the streams 272 int32_t audioLastTime; 273 // when all the audio streams are being paused, we assign audioLastTime to 274 // this variable, so this value could be provided to the battery app 275 // in the next pullBatteryData call 276 int32_t audioTotalTime; 277 278 int32_t videoLastTime; 279 int32_t videoTotalTime; 280 }; 281 KeyedVector<int, BatteryUsageInfo> mBatteryData; 282 283 enum { 284 SPEAKER, 285 OTHER_AUDIO_DEVICE, 286 SPEAKER_AND_OTHER, 287 NUM_AUDIO_DEVICES 288 }; 289 290 struct BatteryAudioFlingerUsageInfo { 291 int refCount; // how many audio streams are being played 292 int deviceOn[NUM_AUDIO_DEVICES]; // whether the device is currently used 293 int32_t lastTime[NUM_AUDIO_DEVICES]; // in ms 294 // totalTime[]: total time of audio output devices usage 295 int32_t totalTime[NUM_AUDIO_DEVICES]; // in ms 296 }; 297 298 // This varialble is used to record the usage of audio output device 299 // for battery app 300 BatteryAudioFlingerUsageInfo mBatteryAudio; 301 302 // Collect info of the codec usage from media player and media recorder 303 virtual void addBatteryData(uint32_t params); 304 // API for the Battery app to pull the data of codecs usage 305 virtual status_t pullBatteryData(Parcel* reply); 306private: 307 308 class Client : public BnMediaPlayer { 309 // IMediaPlayer interface 310 virtual void disconnect(); 311 virtual status_t setVideoSurfaceTexture( 312 const sp<ISurfaceTexture>& surfaceTexture); 313 virtual status_t prepareAsync(); 314 virtual status_t start(); 315 virtual status_t stop(); 316 virtual status_t pause(); 317 virtual status_t isPlaying(bool* state); 318 virtual status_t seekTo(int msec); 319 virtual status_t getCurrentPosition(int* msec); 320 virtual status_t getDuration(int* msec); 321 virtual status_t reset(); 322 virtual status_t setAudioStreamType(audio_stream_type_t type); 323 virtual status_t setLooping(int loop); 324 virtual status_t setVolume(float leftVolume, float rightVolume); 325 virtual status_t invoke(const Parcel& request, Parcel *reply); 326 virtual status_t setMetadataFilter(const Parcel& filter); 327 virtual status_t getMetadata(bool update_only, 328 bool apply_filter, 329 Parcel *reply); 330 virtual status_t setAuxEffectSendLevel(float level); 331 virtual status_t attachAuxEffect(int effectId); 332 virtual status_t setParameter(int key, const Parcel &request); 333 virtual status_t getParameter(int key, Parcel *reply); 334 virtual status_t setRetransmitEndpoint(const struct sockaddr_in* endpoint); 335 virtual status_t getRetransmitEndpoint(struct sockaddr_in* endpoint); 336 virtual status_t setNextPlayer(const sp<IMediaPlayer>& player); 337 338 sp<MediaPlayerBase> createPlayer(player_type playerType); 339 340 virtual status_t setDataSource( 341 const char *url, 342 const KeyedVector<String8, String8> *headers); 343 344 virtual status_t setDataSource(int fd, int64_t offset, int64_t length); 345 346 virtual status_t setDataSource(const sp<IStreamSource> &source); 347 348 sp<MediaPlayerBase> setDataSource_pre(player_type playerType); 349 void setDataSource_post(const sp<MediaPlayerBase>& p, 350 status_t status); 351 352 static void notify(void* cookie, int msg, 353 int ext1, int ext2, const Parcel *obj); 354 355 pid_t pid() const { return mPid; } 356 virtual status_t dump(int fd, const Vector<String16>& args) const; 357 358 int getAudioSessionId() { return mAudioSessionId; } 359 360 private: 361 friend class MediaPlayerService; 362 Client( const sp<MediaPlayerService>& service, 363 pid_t pid, 364 int32_t connId, 365 const sp<IMediaPlayerClient>& client, 366 int audioSessionId, 367 uid_t uid); 368 Client(); 369 virtual ~Client(); 370 371 void deletePlayer(); 372 373 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; } 374 375 376 377 // @param type Of the metadata to be tested. 378 // @return true if the metadata should be dropped according to 379 // the filters. 380 bool shouldDropMetadata(media::Metadata::Type type) const; 381 382 // Add a new element to the set of metadata updated. Noop if 383 // the element exists already. 384 // @param type Of the metadata to be recorded. 385 void addNewMetadataUpdate(media::Metadata::Type type); 386 387 // Disconnect from the currently connected ANativeWindow. 388 void disconnectNativeWindow(); 389 390 mutable Mutex mLock; 391 sp<MediaPlayerBase> mPlayer; 392 sp<MediaPlayerService> mService; 393 sp<IMediaPlayerClient> mClient; 394 sp<AudioOutput> mAudioOutput; 395 pid_t mPid; 396 status_t mStatus; 397 bool mLoop; 398 int32_t mConnId; 399 int mAudioSessionId; 400 uid_t mUID; 401 sp<ANativeWindow> mConnectedWindow; 402 sp<IBinder> mConnectedWindowBinder; 403 struct sockaddr_in mRetransmitEndpoint; 404 bool mRetransmitEndpointValid; 405 sp<Client> mNextClient; 406 407 // Metadata filters. 408 media::Metadata::Filter mMetadataAllow; // protected by mLock 409 media::Metadata::Filter mMetadataDrop; // protected by mLock 410 411 // Metadata updated. For each MEDIA_INFO_METADATA_UPDATE 412 // notification we try to update mMetadataUpdated which is a 413 // set: no duplicate. 414 // getMetadata clears this set. 415 media::Metadata::Filter mMetadataUpdated; // protected by mLock 416 417#if CALLBACK_ANTAGONIZER 418 Antagonizer* mAntagonizer; 419#endif 420 }; // Client 421 422// ---------------------------------------------------------------------------- 423 424 MediaPlayerService(); 425 virtual ~MediaPlayerService(); 426 427 mutable Mutex mLock; 428 SortedVector< wp<Client> > mClients; 429 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients; 430 int32_t mNextConnId; 431 sp<IOMX> mOMX; 432 sp<ICrypto> mCrypto; 433 sp<RemoteDisplay> mRemoteDisplay; 434}; 435 436// ---------------------------------------------------------------------------- 437 438}; // namespace android 439 440#endif // ANDROID_MEDIAPLAYERSERVICE_H 441